Telescopic ladder



FIG. 1 is a front view of a telescopic ladder showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top perspective view thereof;

FIG. 4 is a bottom perspective view thereof; and,

FIG. 5 is an enlarged view of the indicated portion in FIG. 4.

The dashed broken lines illustrate portions of the telescopic ladder and form no part of the claimed design. The dot-dash broken lines define the bounds of the claimed design and form no part thereof. 

CLAIM The ornamental design for a telescopic ladder, as shown and described. 